package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.gulimall.common.utils.PageUtils;
import com.atguigu.gulimall.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        if (catelogId == 0) {
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), new QueryWrapper<AttrGroupEntity>()
                    .like("attr_group_name", params.get("key")));
            return new PageUtils(page);
        } else {
            //select * from attr_group   where catelog_id=?   and key=?

            LambdaQueryWrapper<AttrGroupEntity> wrapper = new LambdaQueryWrapper<>();
            wrapper.eq(AttrGroupEntity::getCatelogId, catelogId);
            String key = (String) params.get("key");
            if (StringUtils.isNotEmpty(key)) {
                wrapper.and(x -> x.like(AttrGroupEntity::getAttrGroupName, key).or().eq(AttrGroupEntity::getAttrGroupId, key));
            }
            IPage<AttrGroupEntity> page =

                    this.page(new Query<AttrGroupEntity>().getPage(params), wrapper
                    );
            return new PageUtils(page);
        }


    }

    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        //com.laoyang.gulimall.product.vo
        //1、查询分组信息
        List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));

        //2、查询所有属性
        List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(group -> {
            AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(group, attrsVo);
            List<AttrEntity> attr = attrService.getRelationAttr(attrsVo.getAttrGroupId());
            attrsVo.setAttrs(attr);
            if (attr != null) {
                return attrsVo;
            }
            return null;
        }).collect(Collectors.toList());
        collect.removeIf(Objects::isNull);
        return collect;
    }

}